[Dillo-dev] Q: why does Nav_stack_clean() free the data and Nav_stack_truncate() not?

While reviewing nav.c to figure out the reload crash bug I noticed something that seems inconsistent: both Nav_stack_truncate() and Nav_stack_clean() remove items from the navigation stack, yet Nav_stack_truncate() does not free the data it removes and Nav_stack_clean() does. Is this a bug? If not, what haven't I understood? Regards, Jeremy Henty